'use strict'/* eslint-disable */
const path = require('path',)
const defaultSettings = require('./src/settings.js',)

function resolve(dir,) {
  return path.join(__dirname, dir,)
}

const name = defaultSettings.title || 'vue Admin Template' // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 9528 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,
  devServer: {
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true,
    },
    proxy: {
      // 这里的api 表示如果我们的请求地址有/api的时候,就出触发代理机制
      // localhost:8888/api/abc  => 代理给另一个服务器
      // 本地的前端  =》 本地的后端  =》 代理我们向另一个服务器发请求 （行得通）
      // 本地的前端  =》 另外一个服务器发请求 （跨域 行不通）
      '/api': {
        target: 'http://ihrm.itheima.net',
        changeOrigin: true,
        // pathRewrite:{
        //      // 重新路由  localhost:8888/api/login  => www.baidu.com/api/login
        //      '^/api': ''   // 假设我们想把 localhost:8888/api/login 变成www.baidu.com/login 就需要这么做
        // }
      },
    },
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        '@': resolve('src',),
      },
    },
  },
  chainWebpack(config,) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload',).tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/,],
        include: 'initial',
      },
    ])

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch',)

    // set svg-sprite-loader
    config.module
      .rule('svg',)
      .exclude.add(resolve('src/icons',),)
      .end()
    config.module
      .rule('icons',)
      .test(/\.svg$/,)
      .include.add(resolve('src/icons',),)
      .end()
      .use('svg-sprite-loader',)
      .loader('svg-sprite-loader',)
      .options({
        symbolId: 'icon-[name]',
      })
      .end()

    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html',)
            .use('script-ext-html-webpack-plugin'[{
              // `runtime` must same as runtimeChunk name. default is `runtime`
              inline: /runtime\..*\.js$/,
            }])
            .end()
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial', // only package third parties that are initially dependent
                },
                elementUI: {
                  name: 'chunk-elementUI', // split elementUI into a single package
                  priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/, // in order to adapt to cnpm
                },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components',), // can customize your rules
                  minChunks: 3, //  minimum common number
                  priority: 5,
                  reuseExistingChunk: true,
                },
              },
            })
          // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
          config.optimization.runtimeChunk('single',)
        },
      )
  },
}
